Gage-cock.



Ptented sept. 9, |902. y w. L STAAF.

GAGE COCK.

(Application led Nov. 19, 1901.)

(No Model.)

UNITED STATES PATENT FFCE.

VERNER I. STAAF, OF PITTSBURG, PENNSYLVANIA.

r GAGE-COCK.`

SPECIFICATION forming' part 0f Letters Patent N0. 708,785, dated September 9, 1902.

Application iiled November 19, 1901. Serial No. 82,929. (No model.)

This invention relates to certain new and useful improvements in gage-cocks, and has for its main object to construct a gage-cock in such a -manner as to connect a series of blowo'ff pipes thereto, thepipes being connected to the water-column in such a manner as to register with different Water-levels therein,-

and all discharging through the same cook.

Briefly described, therefore, my invention consists of a gage-cock comprising a shell or body having a series of ports with a rotatable valve provided with a single port, which is adapted to be operated so as to bring the port into registration with one of the ports in the casing to exhaust or blow-oi through one of the pipes. Means is provided for adjusting the tension upon the valve so that the latter may be held tight upon its seat at all times without hindering the free movement thereof when desired.

Various other features enter into my invention, and these,together with the construction above mentioned, will be hereinafter more specifically described and then particularly pointed out in the claims.

In describing the invention in detail reference will be had to the accompanying drawings, forming a part of this speciticatiomand wherein like numerals of reference Will-be employed to indicate like parts throughout the several views, in which-` Figure lis a front elevation of my improved gage-cock, showing the same connected up to a water-column. Fig. 2 is a top plan view of myimproved gage-cock. Fig. 3 is a side elevation thereof. Fig. 4 is a transverse vertical sectional view thereof. Fig. 5 is a rear elevation of the casing with cap and valveplate removed. Fig. 6 is a detail plan view of the disk employed for holding the valveplate in position. Fig. 7 is a detail perspective view' of the parts employed for holding the valve-plate and adjusting the tension thereon.

As is well known in the art, it is the practice to provide a series of blow-off or gage cocks in connection with steam-boilers or engines arranged one above the other, so that the water-level in the Water-column or boiler may readily be determined. In my invention I connect all of the blows-oit pipes to the same gage-cock, providing means for discharging either one independently of the others. In the accompanying illustrations I have shown a water-,column 1,to which are connected three blow-off pipes 2, 3, and 4. These blow-off pipes are arranged one above the other and are each connected to a cock common to all,

which will now be described.

Myimproved gage-cock comprises an annular shell 5, the valve-plate 6 of which is provided with a central opening 7 to receivethe stem 8 of the valve-disk 9. This valve-plate .and shell or casing are provided with ports on which are placed indicating inscriptions-'4P such as Low, Center, High -for the respective blow-off pipes. y A valve-disk 9 is provided with an orifice or port 16, so positioned as to be brought into registration with the orifices or posts 10 11 12 in the valve-plate 6. The stern 8 of this valve-disk extends outwardly in front of the casing and has a lever 17 secured thereon by a key 18 or in any other suitable manner, with a tap-.screw 19 engaging into the end of the stem. 4This lever may be of any desired form, though in the accompanying illustrations I have shown the same as extending outwardly to each side of the stem and provided with eyes 20, to which chains (not shown) or other like devices may be attached for operating. The lever carries a pointer 21, and when the leveris operated so as to bring the pointer opposite one of the ridges 22 on the plate 15 the oriice 16 Will be in registration with the respective orifice or port in the casing. The ange of the shell 5 is interiorly threaded to receive the threaded flange 23, carried by the cap 24, the latter being centrally recessed to permit the mounting therein of the mechanism for holding the valvedisk against the valve-plate with the desired tension. This mechanism includes two disks 25 2G, the former having a central cone 27, which seats in a seat provided therefor in the rear face of the valve-disk fl. Both of these disks have annular offsets 27, which engage in the ends of a stiff coil-spring 2S. The tension on this spring is increased or decreased by a set-screw 29, mounted in the end of the cap 2l and bearing against the disk 2G, as shown. rlhe cap 24 has a discharge-port 30 extending through the underneath side and communicating with the chamber in said cap. A pipe 3l may, if desired, be connected with this discharge-port. In order that the weight of the gage-cock will not be suspended from the blow-off pipes, I provide the cap 24C with a socket 32 in one side, into which a bracerod 33 is inserted, the other end of this being rigidly connected to the water-column. In the position shown in Fig. l the ports are all close-d, the valve-disk 9 being in such a position as to bring the orifice 16 midway between the orifices IOand Il. y When thelever is actuated so as to bring the orifice or port into registration with either of the orifices or ports l0, Il, or l2, comm unication with therespective blow-off pipe is established and the water or steam is discharged through port 30 and pipe 3l. The tension on the spring 2S may be increased by means of the set-screw 29,so as to always retain the valve-disk firmly seated, this tension, however, not being suflicient to prevent the free rotation of the disk valve by means of its stem and lever connected thereto.

Vhile I have shown the gage-cock as constructed to receive three blow-off pipes, as this is the number generally employed, yetit will be evident that a greater number of pipes may be connected to the same gage-cock by increasing the number of ports in the latter, and such changes as this and other minor details of construction may be made without departing from the general spirit of my invention.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a three-way gage-cock, a casing having ports for registration with a series of blow-oit pipes, and a rotary Valve-disk having a single discharge-port adapted on rotation to register with the respective blow-olf pipes, substantially as described.

2. A gage-cock having a series of ports, and adapted for connection to a series ot' blow-off pipes, a disk valve having a single discharge-port, means connected to the stem of said valve for rotating the same, and means for adjusting the tension on said disk valve, substantially as described.

3. In a gage-cock, the combination of a casingr having a series of ports and adapted l'or connection to a series of blow-oit pipes, a rotatable valve disk mounted in thecasing and having a single port through which all of the blow-off pipes discharge, and means for operating said valve, substantially as described.

4i. In a gage-cock, a casing having,r a series of ports and adapted for connection to a series of blow-ofi' pipes, of means for controlling the ports in the casing whereby each of the blow-oft' pipes discharges through a conimon port.

5. A three-way gage-cock having three inlet-ports and one discharge-port and adapted for connection to three blow-off pipes, and means for controlling said ports whereby the discharge from the blow-ofi' pipes is through a port common to all.

fi. In a gage-cock, a casing having a chamber and a series of inlet-ports to said chamber, disk valve having a single orifice or port common to all of the inlet-ports in the casing, a lever connected to the stem of the casing and provided with a pointer, a single discharge-port in the casing, means in the chamber ot the casing for holding the disk valve seated, and means for adjusting the tension on said disk valve, substantially as described.

7. In a gage-cock, a casing having a series of inlet-ports and a single discharge-port, and a valve mounted in the casing and controlling each of the inlet-ports, substantially as described.

8. In a gage-cock, a casing having a series of inlet-ports and a single discharge-port, and a valve operative to close all the ports and to open one port independently ot' the other ports, substantially as described.

9. In a gage-cock, a casing having two or more inlet-ports, and a single discharge-port, and a valve operative to close'the ports and to open each port independently of the other ports, substantially as described.

l0. In a gage-cock, a casing having inletports registering with separate blow-oft' ports, and a single discharge port, a disk valve mounted in the casing and provided with a single port, means connected to said valve for operating same to close the inlet-ports and to open the same independently to the discharge port, and adjustable means for holding said valve on its seat, substantially as described.

ll. In a gage-cock, a casing having an indicating-plate adapted to receive indicatingmarks, said casing having a series of inletports each in communication with a separate blow-off pipe, and a single discharge-port, a valve operative to close the inlet-ports and to open one port to the discharge independently of the others, a lever connected to the stem of said valve for operating the same, and a pointer carried by said lever to indicate by the inscriptions on said indicatingplate the position of said valve, substantially as described.

In testimony whereof I aflix my signature in the presence of two witnesses.

WERNER I. s'rAAF.

Witnesses:

JOHN NoLAND, E. E. POTTER.

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